From ada005c1069077d804be4ca6dae50d67e483473f Mon Sep 17 00:00:00 2001
From: Francois Fleuret <francois@fleuret.org>
Date: Wed, 14 Jun 2017 22:22:52 +0200
Subject: [PATCH] Added a note about the speed of vignette generation.

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 792fc31..65c70a2 100644
--- a/README.md
+++ b/README.md
@@ -31,3 +31,7 @@ make -j -k
 ```
 
 should generate an image example.png in the current directory.
+
+Note that the image generation does not take advantage of GPUs or
+multi-core, and can be as slow as 40 vignettes per second s on a 4GHz
+i7-6700K.
-- 
2.20.1